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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 1 — Jan. 4, 2012

Numerical analysis of a SNOM tip based on a partially cladded optical fiber

Jasmin Smajic and Christian Hafner  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 23140-23152 (2011)

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A Scanning Nearfield Optical Microscope (SNOM) tip with partial metallic cladding is presented. For its design, a very demanding 2D eigenvalue analysis of an optical waveguide with material and radiation losses is carried out by the Multiple Multipole Program (MMP) and by the Finite Element Method (FEM). These simulations require some special tricks that are outlined. The computed 2D MMP and FEM results are compared and discussed. This 2D analysis is followed by a full 3D FEM analysis of the SNOM tip. The obtained 3D results confirm the corresponding 2D predictions. Important conclusions regarding the guiding capabilities of the chosen structure and the efficiency of the applied numerical methods are presented.

© 2011 OSA

OCIS Codes
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons
(050.1755) Diffraction and gratings : Computational electromagnetic methods
(180.4243) Microscopy : Near-field microscopy

ToC Category:

Original Manuscript: August 31, 2011
Revised Manuscript: October 8, 2011
Manuscript Accepted: October 17, 2011
Published: October 31, 2011

Virtual Issues
Vol. 7, Iss. 1 Virtual Journal for Biomedical Optics

Jasmin Smajic and Christian Hafner, "Numerical analysis of a SNOM tip based on a partially cladded optical fiber," Opt. Express 19, 23140-23152 (2011)

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